99312781 ÷ 145 
Our goal is to divide 99312781 by 145.

Step 1:
If we divide 9 by 145, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 145

Step 2:
145 can be fit into 99 0 times, resulting in a remainder of 99.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 99 and we're left with 99.
Take the next digit (3) from the dividend and append it to 99, then repeat: 993 / 145

On to step 3:
145 goes into 993 6 times with a remainder of 123.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we take 870 away from 993, we end up with 123.
Include the next digit (1) from the dividend after 123, then repeat: 1231 / 145

Advancing to step 4:
When dividing 1231 by 145, we get 8 with a remainder of 71.
The number 8 becomes the next digit in our result. 
Result so far: 68.0
Subtract 1160 from 1231 to get 71.
Append the next digit (2) from the dividend to 71 and continue with: 712 / 145

Moving on to step 5:
When dividing 712 by 145, we get 4 with a remainder of 132.
The next digit of our result is 4. 
Result so far: 684.0
Subtracting 580 from 712 leaves us with 132.
Bring next digit (7) of the dividend behind the 132 and repeat the process: 1327 / 145

Going ahead to step 6:
If we divide 1327 by 145, we get 9 and a remainder of 22.
Put 9 as the next digit of the answer. 
Result so far: 6849.0
If we take 1305 away from 1327, we end up with 22.
Take the next digit (8) from the dividend and append it to 22, then repeat: 228 / 145

On to step 7:
If we divide 228 by 145, we get 1 and a remainder of 83.
The next digit of our result is 1. 
Result so far: 68491.0
If we subtract 145 from 228, we get 83.
Fetch the next digit (1) from the dividend, attach it to 83 and continue: 831 / 145

Moving on to step 8:
831 divided by 145 is 5 with a remainder of 106.
Put 5 as the next digit of the answer. 
Result so far: 684915.0
Subtracting 725 from 831 leaves us with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Let's proceed to step 9:
The number 145 fits into 1060 7 times, leaving a remainder of 45.
Use 7 as the next digit of our solution. 
Result so far: 684915.7
The remainder is 45 after subtracting 1015 from 1060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 10:
145 can be fit into 450 3 times, resulting in a remainder of 15.
The next digit of our result is 3. 
Result so far: 684915.73
The remainder is 15 after subtracting 435 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 11:
150 divided by 145 is 1 with a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 684915.731
Subtracting 145 from 150 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 12:
145 goes into 50 0 times with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 684915.731
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 13:
500 divided by 145 is 3 with a remainder of 65.
Record the quotient 3 as the next digit in the result. 
Result so far: 684915.73103
If we subtract 435 from 500, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 14:
145 can be fit into 650 4 times, resulting in a remainder of 70.
Record the quotient 4 as the next digit in the result. 
Result so far: 684915.731034
If we subtract 580 from 650, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 15:
145 can be fit into 700 4 times, resulting in a remainder of 120.
Write down 4 as next digit of the result. 
Result so far: 684915.7310344
The remainder is 120 after subtracting 580 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

The quotient of the division is 684915.7310344, and the remainder is 1.2e-06.